In addition to Shut Up and Sit Down we have Wil Wheaton's Tabletop. Every week Wil and his guests review the rules of a different board game, then do a play-through video. It's funny and a great way to check out board games to see if they would be entertaining.

Youtube is also a good place to look for video reviews/playthroughs of board games. The first time we played Arkham Horror, we used Grudunza's very comprehensive videos to orient ourselves.

We also used the complete tutorial for the Game of Thrones board game the first time we played it. That one is actually produced by Fantasy Flight Games. Tutorials like this are a handy way to get acclimatized to a game without having to read through the entire manual while everyone else is sitting around waiting for you.